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It takes Amy between 6 and 7 minutes to grill a steak, and

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It takes Amy between 6 and 7 minutes to grill a steak, and

by BTGmoderatorDC » Tue Apr 02, 2019 10:28 pm

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It takes Amy between 6 and 7 minutes to grill a steak, and she can only grill one steak at a time. She does not need to take breaks between steaks. Can Amy finish grilling all the steaks needed for her party before her guests arrive?

(1) Amy needs to grill four steaks for her party.

(2) Amy's guests will arrive in half an hour.

OA C

Source: Manhattan Prep
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Source: — Data Sufficiency |

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by Jay@ManhattanReview » Thu Apr 04, 2019 12:17 am

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BTGmoderatorDC wrote:It takes Amy between 6 and 7 minutes to grill a steak, and she can only grill one steak at a time. She does not need to take breaks between steaks. Can Amy finish grilling all the steaks needed for her party before her guests arrive?

(1) Amy needs to grill four steaks for her party.

(2) Amy's guests will arrive in half an hour.

OA C

Source: Manhattan Prep
Let's take each statement one by one.

(1) Amy needs to grill four steaks for her party.

=> She will take 6*4 = 24 to 7*4 = 28 minutes to grill. However, we do not know what time her guests would arrive. Insufficient.

(2) Amy's guests will arrive in half an hour.

We do not know how many steaks she has to grill. Insufficient.

(1) and (2) together

Even if she takes 28 minutes to grill 4 steaks, she would finish her cooking before guests arrive. Sufficient.

The correct answer: C

Hope this helps!

-Jay
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by swerve » Thu Apr 04, 2019 10:18 am

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C

D

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In the worst case, Amy needs 28 min (4x7).

Statement 1: Does not provide data when guests are supposed to come. Insufficient
Statement 2: Does not provide how many steaks she needs to cook. Insufficient

Statement 1 and 2: Amy needs max 28 min and the guests will arrive in 30 min. So she can cook before guests arrive.

Therefore, __C__ is the correct answer.
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